The US Centers for Disease Control CDC recommends two doses

The us centers for disease control cdc recommends two doses - GED Prep

Question

The U.S. Centers for Disease Control (CDC) recommends two doses of chicken pox vaccine for all children. The CDC claims that two doses of the vaccine are about 90% effective at preventing chicken pox. In 2005, researchers in Italy introduced for the first time the universal chicken pox vaccination in one Italian region. The table shows the data they collected.

How do the data from the Italy study support the CDC claim that all children should get the chicken pox vaccination? You may use the calculator.

Answers

Chicken pox vaccination data show a similar 90% effectiveness rate claimed by the CDC.
Chicken pox occurrence was eliminated, and hospitalization rates dropped to near zero.
Chicken pox occurrence before vaccination was 6.1% and hospitalization rate was 18.7%.
correct

Chicken pox occurrence and hospitalization rates dropped significantly after starting universal vaccination.

Explanation

The correct answer is: Chicken pox occurrence and hospitalization rates dropped significantly after starting universal vaccination.

The data clearly shows a decrease in both chicken pox occurrence (from 6.1% to 4.0%) and hospitalization rates (from 18.7% to 8.4%) after implementing universal vaccination. This significant reduction supports the CDC's recommendation for vaccination, as it demonstrates the vaccine's effectiveness in reducing both the incidence and severity of chicken pox cases.

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